Mimetic Attraction. 381 
established system, and certain species which seem to 
hover on the outskirts of mimetic groups, undecided as it 
were whether to throw in their lot with one association 
or another, 
I-am indebted to Professor Poulton, F.R.S., for free 
access to the Hope Department, and for permission to 
figure insects from the collection under his charge. 
NOTE. 
In the course of the discussion which followed the reading of 
this paper, my friend Professor Poulton expressed the opinion that 
the term “mimicry” should be restricted entirely to cases of 
Batesian association, and should not be applied to resemblances 
between distasteful forms. I am, of course, entirely at one with 
Professor Poulton as to the essential difference between the false 
warning which is the leading feature in the one case, and the true 
warning which characterises the other ; and I agree that it would 
be most desirable to mark the distinction by the use of separate 
terms. Though the present paper must stand as it was read, I am 
willing in future to attempt the restriction which he recommends. 
Perhaps ‘‘ Miillerian assimilation” and ‘“ reciprocal assimilation,” 
though a little cumbrous, may serve instead of the terms used in 
the text ; and it may be hoped that the advantage of greater pre- 
cision thus gained will outweigh the disadvantage of having to 
drop such convenient words as “‘ mimic,” ‘“‘ mimetic” and “ model ” 
when speaking of a Millerian group.—June 2, 1897. 
